The lithium cobalt -type material is a lithium ion battery of the positive electrode is not suitable for large current discharge. When the large current discharge is too large, the discharge time will be reduced (the inside will generate a higher temperature and the energy consumption is consumed), and it may be dangerous; however The lithium battery of the positive material material can be used with 20C or even larger (C is the capacity of the battery, such as C = 800mAh, the 1C charging ratio is 800mA) to charge and discharged, which is especially suitable for electric vehicles. Therefore, the battery production plant gives the maximum discharge current, which should be less than the maximum discharge current during use. The lithium -ion battery has certain requirements for temperature. The factory gives the charging temperature range, the range of discharge temperature and the stored temperature range. Excessive charging will cause permanent damage to the lithium -ion battery. Lithium -ion battery charging current should be based on the suggestion of the battery production plant, and the limited stream circuit is required to avoid overcurrent (overheating). The commonly used charging multiplication rate is 0.25C ～ 1C. When charging large currents, the battery temperature is often detected to prevent overheating damage to the battery or explosion.

　　Lithium -ion battery charging is divided into two stages: first charging at a constant current, and the constant voltage charging is changed when it is close to the termination voltage. A 800mAh -capacity battery with a termination charging voltage of 4.2V. The battery is charged at a constant current at 800mA (charging ratio). At the beginning, the battery voltage was boosted at a large slope. When the battery voltage is close to 4.2V, it is changed to 4.2V constant voltage charging. When the charging current drops to 1/10-50C (the setting values of each factory are different, it does not affect the use), it is considered to be close to full, and the charging can be terminated (some chargers start the timer after 1/10C. After a certain period of time End charging)

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